def test_merge_first_single(line, canvas, view):
"""Test single line merging starting from 1st segment."""
line.handles()[1].pos = (20, 0)
segment = Segment(line, canvas)
segment.split_segment(0)
# We start with 3 handles and 2 ports, after merging 2 handles and 1 port
# are expected
assert len(line.handles()) == 3
assert len(line.ports()) == 2
old_ports = line.ports()[:]
segment = Segment(line, canvas)
handles, ports = segment.merge_segment(0)
# Deleted handles and ports
assert 1 == len(handles)
assert 2 == len(ports)
# Handles and ports left after segment merging
assert 2 == len(line.handles())
assert 1 == len(line.ports())
assert handles[0] not in line.handles()
assert ports[0] not in line.ports()
assert ports[1] not in line.ports()
# Old ports are completely removed as they are replaced by new one port
assert old_ports == ports
# Finally, created port shall span between first and last handle
port = line.ports()[0]
assert (0, 0) == port.start.pos
assert (20, 0) == port.end.pos
def test_constraints_after_merge(canvas, connections, line, view):
"""Test if constraints are recreated after line merge."""
line2 = Line(connections)
canvas.add(line2)
head = line2.handles()[0]
canvas.request_update(line)
canvas.request_update(line2)
view.update()
HandleMove(line2, head, view).connect((25, 25))
cinfo = connections.get_connection(head)
assert line == cinfo.connected
segment = Segment(line, canvas)
segment.split_segment(0)
assert len(line.handles()) == 3
orig_constraint = cinfo.constraint
segment.merge_segment(0)
assert len(line.handles()) == 2
h1, h2 = line.handles()
# Connection shall be reconstrained between 1st and 2nd handle
cinfo = canvas.connections.get_connection(head)
assert orig_constraint != cinfo.constraint
def test_add_segment_to_line(canvas, connections):
line = Line(connections)
canvas.add(line)
segment = Segment(line, canvas)
assert 2 == len(line.handles())
segment.split((5, 5))
assert 3 == len(line.handles())
def test_orthogonal_horizontal_undo(self):
"""Test orthogonal line constraints bug (#107)
"""
canvas = Canvas()
line = Line()
canvas.add(line)
assert not line.horizontal
assert len(canvas.solver._constraints) == 0
segment = Segment(line, None)
segment.split_segment(0)
line.orthogonal = True
self.assertEqual(2, len(canvas.solver._constraints))
after_ortho = set(canvas.solver._constraints)
del undo_list[:]
line.horizontal = True
self.assertEqual(2, len(canvas.solver._constraints))
undo()
self.assertFalse(line.horizontal)
self.assertEqual(2, len(canvas.solver._constraints))
line.horizontal = True
self.assertTrue(line.horizontal)
self.assertEqual(2, len(canvas.solver._constraints))
def __init__(self, canvas):
Gtk.Window.__init__(self, title="Hello World")
#connect the button widget
#connect to its clicked signal
#add is as child to the top-level window
#self.button = Gtk.Button(label="Click Here")
#self.button.connect("clicked", self.on_button_clicked)
self.label = Gtk.Label()
self.view = GtkView() #Gtk widget
self.view.painter = DefaultPainter()
self.view.canvas = canvas
self.win_box = Gtk.Box(orientation=Gtk.Orientation.HORIZONTAL)
self.add(self.win_box)
self.win_box.pack_start(self.label, True, True, 0)
self.win_box.pack_start(self.view, True, True, 0)
self.b2 = Box(60, 60)
self.b2.min_width = 40
self.b2.min_height = 50
self.b2.matrix.translate(170, 170)
canvas.add(self.b2)
# Draw gaphas line
self.line = Line()
self.line.matrix.translate(100, 60)
canvas.add(self.line)
self.line.handles()[1].pos = (30, 30)
self.segment = Segment(self.line, canvas)
self.segment.split_segment(0)
def create_canvas(canvas, title):
# Setup drawing window
window = Gtk.Window()
window.set_title(title)
window.set_default_size(400, 400)
view = GtkView() #Gtk widget
view.painter = DefaultPainter()
view.canvas = canvas
win_box = Gtk.Box(
orientation=Gtk.Orientation.HORIZONTAL) #added Gtk box to Gtk window
window.add(win_box)
win_box.pack_start(view, True, True, 0) #added "view" widget to the box
# Draw gaphas box
b2 = Box(60, 60)
b2.min_width = 40
b2.min_height = 50
b2.matrix.translate(170, 170)
canvas.add(b2)
# Draw gaphas line
line = Line()
line.matrix.translate(100, 60)
canvas.add(line)
line.handles()[1].pos = (30, 30)
segment = Segment(line, canvas)
segment.split_segment(0)
window.show_all()
window.connect("destroy", Gtk.main_quit)
def test_params_error_exc(canvas, connections):
"""Test parameter error exceptions."""
line = Line(connections)
segment = Segment(line, canvas)
# There is only 1 segment
with pytest.raises(ValueError):
segment.split_segment(-1)
line = Line(connections)
segment = Segment(line, canvas)
with pytest.raises(ValueError):
segment.split_segment(1)
line = Line(connections)
# Can't split into one or less segment :)
segment = Segment(line, canvas)
with pytest.raises(ValueError):
segment.split_segment(0, 1)
def test_orthogonal_line_split(canvas, line):
"""Test orthogonal line splitting."""
# Start with no orthogonal constraints
assert len(line._orthogonal_constraints) == 0
segment = Segment(line, canvas)
segment.split_segment(0)
line.orthogonal = True
# Check orthogonal constraints
assert 2 == len(line._orthogonal_constraints)
assert 3 == len(line.handles())
Segment(line, canvas).split_segment(0)
# 3 handles and 2 ports are expected
# 2 constraints keep the self.line orthogonal
assert 3 == len(line._orthogonal_constraints)
assert 4 == len(line.handles())
assert 3 == len(line.ports())
def create_canvas(c=None):
if not c:
c = Canvas()
b = MyBox(c.connections)
b.min_width = 20
b.min_height = 30
b.matrix.translate(20, 20)
b.width = b.height = 40
c.add(b)
bb = Box(c.connections)
bb.matrix.translate(10, 10)
c.add(bb, parent=b)
bb = Box(c.connections)
bb.matrix.rotate(math.pi / 1.567)
c.add(bb, parent=b)
circle = Circle()
h1, h2 = circle.handles()
circle.radius = 20
circle.matrix.translate(50, 160)
c.add(circle)
pb = Box(c.connections, 60, 60)
pb.min_width = 40
pb.min_height = 50
pb.matrix.translate(100, 20)
c.add(pb)
ut = UnderlineText()
ut.matrix.translate(100, 130)
c.add(ut)
t = MyText("Single line")
t.matrix.translate(100, 170)
c.add(t)
line = MyLine(c.connections)
c.add(line)
line.handles()[1].pos = (30, 30)
segment = Segment(line, c)
segment.split_segment(0, 3)
line.matrix.translate(30, 80)
line.orthogonal = True
return c
def test_constraints_after_split(canvas, connections, line, view):
"""Test if constraints are recreated after line split."""
# Connect line2 to self.line
line2 = Line(connections)
canvas.add(line2)
head = line2.handles()[0]
HandleMove(line2, head, view).connect((25, 25))
cinfo = canvas.connections.get_connection(head)
assert line == cinfo.connected
orig_constraint = cinfo.constraint
Segment(line, canvas).split_segment(0)
assert len(line.handles()) == 3
h1, h2, h3 = line.handles()
cinfo = canvas.connections.get_connection(head)
assert cinfo.constraint != orig_constraint
class ConnectorTool(BlockConnectTool):
"""
This is a port-connecting handle tool that additionally initiates the
creation of connector lines when the user is withing gluing distance of an
as-yet-unconnected Port.
"""
def __init__(self):
self._handle_index_glued = 0
self._handle_index_dragged = 1
self.grabbed_handle = None
self.grabbed_item = None
self._new_item = None
self.motion_handle = None
def on_button_press(self, event):
glueitem, glueport, gluepos = self.view.get_port_at_point(
(event.x, event.y), distance=10, exclude=[])
line, handle = self.view.get_handle_at_point((event.x, event.y))
try:
if glueport and hasattr(glueport, "point"):
self.toggle_highlight_ports(glueport.portinstance)
self.line = self._create_line((event.x, event.y))
self._new_item = self.line
h_glue = self.line.handles()[self._handle_index_glued]
conn = Connector(self.line, h_glue)
sink = ConnectionSink(glueitem, glueport)
conn.connect_port(sink)
h_drag = self.line.handles()[self._handle_index_dragged]
self.grab_handle(self.line, h_drag)
return True
except Exception as e:
print 'Connection Failed, Disconnect/Connect the last Connection again: /n', e
def _create_line(self, (x, y)):
canvas = self.view.canvas
line = BlockLine()
segment = Segment(line, view=self.view)
canvas.add(line)
x, y = self.view.get_matrix_v2i(line).transform_point(x, y)
line.matrix.translate(x, y)
line.fuzziness = 1.0
return line
def test_ports_after_split(canvas, line):
"""Test ports removal after split."""
line.handles()[1].pos = (20, 16)
segment = Segment(line, canvas)
segment.split_segment(0)
handles = line.handles()
old_ports = line.ports()[:]
# Start with 3 handles and 2 ports
assert len(handles) == 3
assert len(old_ports) == 2
# Split 1st segment again: 1st port should be deleted, but 2nd one should
# remain untouched
segment.split_segment(0)
assert old_ports[0] not in line.ports()
assert old_ports[1] == line.ports()[2]
def test_orthogonal_line_undo(self):
"""Test orthogonal line undo
"""
canvas = Canvas()
line = Line()
canvas.add(line)
segment = Segment(line, None)
segment.split_segment(0)
# start with no orthogonal constraints
assert len(canvas.solver._constraints) == 0
line.orthogonal = True
# check orthogonal constraints
self.assertEqual(2, len(canvas.solver._constraints))
self.assertEqual(3, len(line.handles()))
undo()
self.assertFalse(line.orthogonal)
self.assertEqual(0, len(canvas.solver._constraints))
self.assertEqual(2, len(line.handles()))
def on_split_line_clicked(button):
selection = view.selection
if isinstance(selection.focused_item, Line):
segment = Segment(selection.focused_item, canvas)
segment.split_segment(0)
